Register for alerts and you could win a pizza

Register your cell phone to receive alerts in the event of an emergency and you could win a pizza.

The San Diego County Office of Emergency Services is working with Papa John’s pizza to offer a free medium, one-topping pizza to the first 500 people who sign up in February with AlertSanDiego, the county’s emergency notification system.

There is no cost to register and county officials say the information will be used only to get out information in an emergency. More than 175,000 county residents are registered with the system.